Size of partitions of my OpenBSD laptop

Having again installed OpenBSD on my laptop (it just works), as a reminder my layout of partitions.

This laptop (Thinkpad T430-U) has a 120GB SSD.

mountpoint		recommendation from disklabel	what I chose in GB
root(/)	5% of disk.	150M – 1G	2
swap	10% of disk.	80M – 2x max physical memory	8
/tmp	8% of disk.	120M – 4G	5
/var	13% of disk.	80M – 4G + 2x size of crash dump	10
/usr	10% of disk.	1500M – 30G	20
/usr/X11R6	3% of disk.	384M – 1G	0
/usr/local	15% of disk.	1G – 20G	25
/usr/src	2% of disk.	1500M – 3G	0
/usr/obj	4% of disk.	5G – 6G	0
/home	30% of disk.	1G – 300G	45
/home/myuser/local			5
Sum			120

Why a special partition for /home/myuser/local? I am used to install self-compiled stuff under my home directory, f.e. current emacs. I don't want to pollute my /usr/local directory. Giving it its own partition below /home gives the possibility to mount it wxallowed.

Disclaimer: I chose to have no seperate partitions for X11R6, src and obj. I just wanted to have one usr partition (except local, because of wxallowed) to be more flexible. Whether this fits your needs, you'll have to evaluate. I won't compile any ports or the kernel at this machine, so I think there is no need for src and obj.

Btw - the logic of auto-partition is explained at disklabel.